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iwlwifi: mvm: honor the max_amsdu_subframes limit

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A peer can limit the number of subframes it can handle in a
single A-MSDU.  Honor this limit.

Note that the smallest limit is 8, and we are very unlikely to reach
that limit. So this isn't really a big deal.

Fixes: a6d5e32f24 ("iwlwifi: mvm: send large SKBs to the transport")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Emmanuel Grumbach 2018-05-17 10:44:20 +03:00 committed by Luca Coelho
parent d94c5a820d
commit 5dd9f6c703
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/intel/iwlwifi/mvm/tx.c
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@ -844,6 +844,10 @@ static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
*/
num_subframes = (max_amsdu_len + pad) / (subf_len + pad);
if (sta->max_amsdu_subframes &&
num_subframes > sta->max_amsdu_subframes)
num_subframes = sta->max_amsdu_subframes;
tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
tcp_hdrlen(skb) + skb->data_len;